Device Configuration 5 - 251
Figure 5-155 Device Overrides - Network QoS screen
6. Set or override the following parameters for the IP DSCP mappings for untagged frames:
7. Use the spinner controls within the 802.1p Priority field for each DSCP row to change or override the priority value.
8. Select the OK button located to save the changes and overrides. Select Reset to revert to the last saved configuration.
5.4.5.4.6 Overriding a Spanning Tree Configuration
Overriding the Network Configuration
The Multiple Spanning Tree Protocol (MSTP) provides an extension to RSTP to optimize the usefulness o f VLANs. MSTOP
allows for a separate spanning tree for each VLAN group, and blocks all but one of the possible alternate paths within each
spanning tree topology.
DSCP Lists the DSCP value as a 6-bit parameter in the header of every IP packet used for packet
classification.
802.1p Priority Assign a 802.1p priority as a 3-bit IP precedence value in the Type of Service field of the
IP header used to set the priority. The valid values for this field are 0-7. Up to 64 entries
are permitted. The priority values are:
0 – Best Effort
1 – Background
2 – Spare
3 – Excellent Effort
4 – Controlled Load
5 – Video
6 – Voice
7 – Network Control
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